**Given:**

- The wall(grey agents) are in a constant place along the top of the world.
- The blue agents always directly below but at various distances. But they be off to the side of the gap but nevertheless can be rotated so that they face the gap.
- That the cone of vision angle is same for all blue turtles.

In the above figures, the blue agent's cone of vision is depicted. I wish to calculate the grey wall which meet the ends of the cone of vision ,that is, one on right and one on left.Also could I somehow calculate the x-coordinate at that point. Not the grey agent's coordinate as that would be a approximation.

**To Compute:**

The x coordinates where the extremes of cone of vision intersect grey turtles. Or those grey turtles they intersect.

**Rough Figure:**

So I wish to compute x_1 and x_2 in the below figure. One way could as suggested by @JenB to divide it into three cases and and calculate A in each case.(Primarily on left or right). Then use trigonometry. I am correct. Are there any other ways as well?